Humidifier for breathing machine and breathing machine

Abstract

The utility model discloses a humidifier for a breathing machine and the breathing machine. The humidifier comprises a main shell and a bottom shell arranged at the bottom of the main shell. The humidifier comprises a main shell and a bottom shell, the main shell comprises a liquid storage cavity, a containing cavity is formed between the main shell and the bottom shell, the humidifier comprises a heating module arranged in the containing cavity, and the heating module is provided with a heating plate and a heating assembly arranged on the side, away from the liquid storage cavity, of the heating plate. The heating plate is arranged between the liquid storage cavity and the accommodating cavity to separate the liquid storage cavity from the accommodating cavity; according to the humidifier, the risk that a user is scalded is reduced, and the heating efficiency is high.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, in particular to a humidifier for a ventilator and a ventilator. Background Art

[0002] Ventilators are usually used to relieve and improve symptoms such as snoring, hypoventilation, and sleep apnea during a patient's sleep. Common ventilators include a main unit component and a humidifier component. The humidifier component is arranged in the gas path, and water can be stored inside it to humidify the flowing gas, thereby avoiding discomfort caused by overly dry gas entering the patient's respiratory tract and improving the patient's comfort during use.

[0003] Since the water in the humidifier needs to be heated and humidified, the current mainstream heating method is to configure a heating plate for each of the main unit and the humidifier, and through contact heat conduction, the water in the humidifier is heated and humidified. However, when the user removes the humidifier, the heating plates of the main unit and the humidifier are in an exposed state for the user, and there is a risk of scalding when the user touches them; moreover, this separate heating method with two heating plates has low heating efficiency. Summary of the Utility Model

[0004] One of the purposes of the utility model is to provide a humidifier for a ventilator to solve the technical problems of the risk of scalding for users and low heating efficiency in the prior art.

[0005] One of the purposes of the utility model is to provide a ventilator.

[0006] To achieve one of the above-mentioned purposes of the utility model, an embodiment of the utility model provides a humidifier for a ventilator, including a main housing and a bottom housing arranged at the bottom of the main housing; the main housing includes a liquid storage cavity, and there is an accommodation chamber between the main housing and the bottom housing. The humidifier includes a heating module arranged in the accommodation chamber. The heating module has a heating plate and a heating component arranged on the side of the heating plate facing away from the liquid storage cavity. The heating plate is arranged between the liquid storage cavity and the accommodation chamber to separate the liquid storage cavity from the accommodation chamber.

[0007] As a further improvement of an embodiment of the utility model, the heating component includes a heating film fixed on one side of the heating plate and an electrical connector electrically connected to the heating film. The electrical connector includes a first electrical connection end for connecting to the heating film and a second electrical connection end exposed outside the main housing.

[0008] As a further improvement of an embodiment of the utility model, the heating component includes a circuit board located between the heating film and the electrical connector. The electrical connection head of the heating film is connected to the circuit board, and the first electrical connection end is connected to the circuit board.

[0009] As a further improvement of an embodiment of the present utility model, the main housing includes a fixed wall disposed adjacent to the bottom housing. A through opening is formed in the middle of the fixed wall. The heating plate is fixed to the fixed wall to block the opening. The bottom wall of the liquid storage cavity includes the fixed wall and the heating plate.

[0010] As a further improvement of an embodiment of the present utility model, a seal is provided between the heating plate and the main housing. The seal has a first sealing portion located between the outer periphery of the heating plate and the fixed wall. The first sealing portion includes a first sealing protrusion facing the fixed wall and a second sealing protrusion facing the outer periphery of the heating plate.

[0011] As a further improvement of an embodiment of the present utility model, the seal includes a horizontal wall and a vertical wall bent from the outer edge of the horizontal wall. The horizontal wall is located between the fixed wall and the heating plate. The first sealing portion is provided on the horizontal wall. The vertical wall is attached to and abuts against the inner wall surface of the main housing.

[0012] As a further improvement of an embodiment of the present utility model, the electrical connector is fixed to the main housing. The electrical connector includes an insulating body. The direction in which the first electrical connection end and the second electrical connection end are arranged is the insertion direction, and the insertion direction is a horizontal direction. The insulating body includes a waterproof wall provided on its outer surface. The main housing includes an abutting wall that abuts against the waterproof wall along the insertion direction.

[0013] As a further improvement of an embodiment of the present utility model, the insulating body includes a waterproof groove provided on its surface. The waterproof groove is located on one side of the abutting wall close to the first electrical connection end, and the abutting wall is located above the waterproof groove.

[0014] As a further improvement of an embodiment of the present utility model, the fixed wall is provided with a first fixing structure facing the heating plate. The outer periphery of the heating plate is provided with a second fixing structure that cooperates with the first fixing structure. The first fixing structure and the second fixing structure are connected and fixed by hot melt pressing.

[0015] As a further improvement of an embodiment of the present utility model, the heating film is attached and fixed to one side of the heating plate. The circuit board and the heating plate are spaced apart by a certain distance in the vertical direction. The fixed wall is provided with a third fixing structure facing the circuit board. The circuit board is provided with a fourth fixing structure that cooperates with the third fixing structure.

[0016] To achieve one of the above-mentioned utility model purposes, an embodiment of the present utility model further provides a ventilator, which includes a main unit, a breathing mask, and a humidifier for a ventilator according to any one of the above technical solutions. The main unit includes an air flow driving device, the humidifier includes an air inlet pipe and an air outlet pipe, the air flow driving device is communicated with the air inlet pipe, and the breathing mask is communicated with the air outlet pipe.

[0017] Compared with the prior art, the humidifier for a ventilator provided by the present utility model has the following beneficial effects: A heating module is directly configured inside the humidifier, without the need for removal, reducing the risk of the user being scalded; the heating module has a heating plate and a heating component. The heating component is used to directly heat the heating plate, and the heating plate is used to directly heat the liquid, with high heating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a perspective view of the humidifier in an embodiment of the present utility model.

[0019] Figure 2 It is a schematic diagram of the humidifier in an open state in an embodiment of the present utility model.

[0020] Figure 3 It is an exploded schematic diagram of a partial structure of the humidifier in an embodiment of the present utility model.

[0021] Figure 4 It is a schematic diagram of the airway structure in an embodiment of the present utility model.

[0022] Figure 5 It is a schematic diagram of the airway structure from another angle in an embodiment of the present utility model.

[0023] Figure 6 It is a schematic diagram of the humidifier with the bottom housing removed in an embodiment of the present utility model.

[0024] Figure 7 It is a schematic diagram of the humidifier with the heating module removed in an embodiment of the present utility model.

[0025] Figure 8 It is a schematic diagram of the humidifier with the heating module removed from another angle in an embodiment of the present utility model.

[0026] Figure 9 It is a schematic diagram of the heating module in an embodiment of the present utility model.

[0027] Figure 10 It is a cross-sectional view of the humidifier in an embodiment of the present utility model.

[0028] Figure 11 It is Figure 10 an enlarged view of the structure within the circle in Detailed Embodiments

[0029] The following will describe the present utility model in detail in conjunction with the specific embodiments shown in the drawings. However, these embodiments do not limit the present utility model, and any structural, method, or functional transformation made by those of ordinary skill in the art based on these embodiments is included within the protection scope of the present utility model.

[0030] Spatial relative position terms used herein, such as "upper", "above", "lower", "below", etc., are for the purpose of facilitating description of the relationship of one unit or feature to another unit or feature as shown in the drawings. The spatial relative position terms are intended to include different orientations of the device in use or operation other than the orientation shown in the figures. For example, if the device in the figure is flipped, the unit described as being "below" or "beneath" other units or features will be "above" other units or features. Therefore, the exemplary term "below" can encompass both the upper and lower orientations. The device can be oriented in other ways (rotated 90 degrees or other orientations), and the spatially related descriptive terms used herein can be interpreted accordingly.

[0031] The present utility model provides a humidifier 100 for a ventilator. Please refer to Figure 1 the structural schematic diagram. The humidifier 100 has an air inlet end 101 and an air outlet end 102. After the gas flows through the inside of the humidifier 100, it is humidified and then enters the patient's respiratory tract, improving the patient's comfort during use.

[0032] The present utility model also provides a ventilator, including a main unit, a breathing mask, and the humidifier 100. The main unit includes an air flow driving device, the air flow driving device is connected to the air inlet end 101 of the humidifier 100, and the breathing mask is connected to the air outlet end 102 of the humidifier 100.

[0033] In this way, when the ventilator is working, the air flow driving device drives the gas to enter the humidifier 100 through the air inlet end 101, mixes with the water vapor generated by heating the stored water in the humidifier 100, and then is supplied to the breathing mask end through the air outlet end 102, providing humidified air supply to the patient. In one embodiment, the air flow driving device is usually a turbo fan. When the turbo fan works, it rotates at a high speed and transfers mechanical energy to the gas, converting it into the kinetic energy of the gas.

[0034] In one embodiment, in combination with Figures 2 - 3As shown, the humidifier 100 includes a main housing 10, a liquid storage cavity 103 formed within the main housing 10, and an airway structure 20 disposed within the main housing 10 and communicating with the liquid storage cavity 103. The airway structure 20 includes an intake pipe 30 for allowing gas to flow into the liquid storage cavity 103 and an outlet pipe 40 for allowing gas to flow out of the liquid storage cavity 103. Among them, the intake end 101 is connected to the intake pipe 30, and the outlet pipe 40 is connected to the outlet end 102, forming a complete air flow transmission path.

[0035] Specifically, the main housing 10 includes a first housing 11 and a second housing 13. The first housing 11 and the second housing 13 are assembled along the vertical direction and jointly enclose to form the liquid storage cavity 103. The liquid storage cavity 103 includes a first liquid storage cavity 1031 located in the first housing 11 and a second liquid storage cavity 1032 located in the second housing 13. The airway structure 20 is disposed in the first liquid storage cavity 1031, and the second liquid storage cavity 1032 is used for storing water or other liquids.

[0036] One end of the first housing 11 and the second housing 13 is rotatably connected, specifically through a rotating shaft. The other end of the first housing 11 can be opened or closed relative to the other end of the second housing 13 to open or close the second liquid storage cavity 1032, which is convenient for adding water or for repairing and disassembling the airway structure 20.

[0037] A sealing strip 50 is provided between the first housing 11 and the second housing 13. When the first housing 11 and the second housing 13 are in a closed and buckled state, the sealing strip 50 is in a compressed state, which can achieve the sealing between the first liquid storage cavity 1031 and the second liquid storage cavity 1032 of the humidifier, and prevent gas leakage and sound leakage from the inside of the humidifier 100 cavity to the outside.

[0038] The first housing 11 is provided with the intake end 101 and the outlet end 102. The intake end 101 communicates with the intake pipe 30 of the airway structure 20. In other words, one end of the intake end 101 is connected to the air flow driving device, and the other end is connected to the intake pipe 30, thereby inputting gas into the first liquid storage cavity 1031. Specifically, a plugging portion is provided on the inner wall surface of the first housing 11 corresponding to the intake end 101. The intake pipe 30 is in plugging and sealing cooperation with the plugging portion. If the humidifier 100 is in a tilted state, the water in the liquid storage cavity 103 cannot enter the intake pipe 30 or the intake end 101 through the connection between the intake pipe 30 and the plugging portion, preventing water from flowing back into the air flow driving device.

[0039] The air outlet pipe 40 of the airway structure 20 is communicated with the air outlet end 102. In other words, one end of the air outlet is connected to the air outlet pipe 40, and the other end is connected to a breathing mask, so as to output the humidified gas to the first liquid storage cavity 1031 and then to the breathing mask. Specifically, a plug-in portion is arranged on the inner wall surface of the first housing 11 corresponding to the air outlet end 102. The air outlet pipe 40 is in plug-in and sealing cooperation with the plug-in portion. If the humidifier is in a tilted state, the water in the liquid storage cavity 103 cannot enter the air outlet pipe 40 or the air outlet end 102 through the connection between the air outlet pipe 40 and the plug-in portion, preventing water from directly pouring into the breathing mask.

[0040] In one embodiment, the airway structure 20 is integrally formed, with a simple structure and simple process.

[0041] In one embodiment, the airway structure 20 is detachably fixed to the first housing 11.

[0042] The airway structure 20 has a first buckle structure 21, and the main housing 10 has a second buckle structure 111 that cooperates with the first buckle structure 21.

[0043] Specifically, the front end of the airway structure 20 is plugged and fixed to the front wall of the first housing through the air inlet pipe 30 and the air outlet pipe 40. The first buckle structure 21 is arranged at the rear end of the airway structure 20. The first buckle structure 21 includes an elastic wall 211 and a hook 212. The elastic wall 211 extends downward and backward obliquely. The second buckle structure 111 includes a hook groove arranged on the rear wall of the first housing 11. The hook 212 is clamped and fixed in the hook groove.

[0044] The arrangement of the elastic wall 211 is beneficial to the subsequent disassembly of the airway structure 20. By pressing the elastic wall 211 forcefully, the hook 212 can be disengaged from the hook groove, and then the front end of the airway structure 20 can be pulled out from the front wall of the first housing 11. In this way, the airway structure 20 can be detachably installed and fixed, facilitating the user to disassemble the airway structure 20 and facilitating the cleaning of the interior of the humidifier 100.

[0045] The airway structure 20 has a first positioning structure 22, and the main housing 10 has a second positioning structure 113 that cooperates with the first positioning structure 22.

[0046] Specifically, the first positioning structure 22 includes a positioning groove arranged at the center of the top of the airway structure 20. The second positioning structure 113 includes a positioning block arranged on the top wall of the first housing 11. After the positioning groove and the positioning block are assembled and matched, the airway structure 20 is limited.

[0047] In one embodiment, in combination with Figures 4 - 5As shown, the intake pipe 30 includes a first intake port 301 communicating with the intake end 101 for gas to flow in and a first outlet port 302 communicating with the first liquid storage cavity 1031; the outlet pipe 40 includes a second intake port 402 communicating with the first liquid storage cavity 1031 and a second outlet port 401 communicating with the outlet end 102 for gas to flow out.

[0048] The intake pipe 30 is a bent diversion pipe. The intake pipe 30 includes a first section 31, a second section 32, and a third section 33 that are sequentially bent along the gas flow path direction; the gas flow direction of the first section 31 is parallel to and opposite to the gas flow direction of the third section 33. The first section 31 includes the first intake port 301, and the third section 33 includes the first outlet port 302.

[0049] The intake pipe 30 includes an inclined wall 34 at the bottom. The contour of the first outlet port 301 includes the end of the inclined wall 34. The inclined wall 34 rises along the direction close to the first outlet port 301, and the end of the inclined wall 34 is a straight edge; when the humidifier 100 is placed horizontally, the straight edge is higher than the highest water level line corresponding to the liquid storage cavity 103.

[0050] The inclined wall 34 is arranged at the bottom of the third section 33. The inclined wall 34 gradually rises along the axial direction of the third section 33 towards the first outlet port 301. Therefore, the straight edge of the inclined wall 34 is the highest and can be used to prevent water flow from entering; in other words, the horizontal line corresponding to the straight edge of the inclined wall 34 is higher than the highest water level line.

[0051] The third section 33 further includes first waterproof walls 35 and a water leakage port 303 located on opposite sides of the first outlet port 302. The first waterproof walls 35 and the water leakage port 303 are also located on both sides of the inclined wall 34 in the circumferential direction. The first waterproof walls 35 are used to prevent liquid from entering the first outlet port 302 when the humidifier 100 is tilted to the first side; the water leakage port 303 is used to drain the liquid in the first outlet port 302 when the humidifier 100 is tilted to the second side; in a specific embodiment, the first side and the second side may correspond to the right side and the left side respectively.

[0052] The second section 32 is inclined in the vertical direction. The third section 33 is lower than the first section 31 and the outlet pipe 40 in the vertical direction. The included angle between the second section 32 and the horizontal plane ranges from 5° to 60°. Thus, the included angle between the second intake port 402 and the horizontal plane ranges from 5° to 60°. Thus, when the water in the humidifier 100 enters the intake pipe 40 from the first outlet port 301 of the intake pipe 30, it will not directly flow out from the second intake port 402 of the intake pipe 40.

[0053] The air outlet pipe 40 is arranged side by side and spaced apart from the first section 31 in the horizontal direction. The third section 33 is located between the first section 31 and the air outlet pipe 40 in the horizontal direction. The first waterproof wall 35 is located on the side of the third section 33 close to the first section 31, and the water leakage port 303 is located on the other side of the third section 33 close to the air outlet pipe 40.

[0054] The second air inlet 402 of the air outlet pipe 40 is parallel to and higher than the second section 32. The second air inlet 402 is formed by bending and extending from one end of the air outlet pipe 40, and a second air outlet 401 is provided at the other end of the air outlet pipe 40.

[0055] In one embodiment, the humidifier 100 includes a bottom shell 15 provided at the bottom of the main shell 10. There is an accommodation chamber 104 between the main shell 10 and the bottom shell 15. The humidifier 100 includes a heating module 60 provided in the accommodation chamber 104. The heating module 60 has a heating plate 61 and a heating component 70 provided on the side of the heating plate 61 facing away from the liquid storage cavity 103. The heating plate 61 is provided between the liquid storage cavity 103 and the accommodation chamber 104 to separate the liquid storage cavity 103 from the accommodation chamber 104, as shown in combination Figures 10 - 11 shown.

[0056] The heating module 60 is configured in the humidifier 100. When the humidifier 100 is disassembled, the heating module 60 can be removed at the same time without separating the heating module 60, so there is no risk of scalding the user. On the other hand, the heating plate 61 is used to directly heat the water in the liquid storage cavity 103, and the heating component 70 is used to directly heat the heating plate 61, with high heating efficiency.

[0057] The heating plate 61 is a stainless steel plate, which has good heat conduction performance and is a food safety grade stainless steel plate, so the humidified gas has high safety when entering the human body.

[0058] In one embodiment, as shown in combination Figures 6 - 9 shown, the heating component 70 includes a heating film 71 fixed on one side of the heating plate 61 and an electrical connector 72 electrically connected to the heating film 71. The electrical connector 72 includes a first electrical connection end for connecting to the heating film 71 and a second electrical connection end exposed outside the main shell.

[0059] The heating film 71 is adhered and fixed on the side of the heating plate 61 facing away from the liquid storage cavity 103. Specifically, the heating film 71 is pasted and fixed on the heating plate 61. The contact area between the heating film 71 and the heating plate 71 is large, and the heat conduction effect is better. The glue between the heating film 71 and the heating plate 61 has heat resistance and has good viscosity at high heating temperatures, ensuring stable contact between the heating film 71 and the heating plate 61.

[0060] In actual use, the second electrical connection end of the electrical connector 72 is electrically connected, so that the first electrical connection end of the electrical connector 72 is electrically conductive to the heating film 71. The heating film 71 is a polyimide electric heating film, which is formed by heat-sealing a polyimide film as an outer insulator and a metal foil or a metal wire as an inner conductive heating element at high temperature and high pressure; thus, the heating film 71 can generate heat after being energized, and transfer the heat to the heating plate 61, which heats the water stored in the liquid storage cavity 103 to form water vapor, and humidifies the gas in the airway structure 20.

[0061] In one embodiment, the heating assembly 70 includes a circuit board 73 located between the heating film 71 and the electrical connector 72, the electrical connector of the heating film 71 is connected to the circuit board 73, and the first electrical connection end is connected to the circuit board 73. In this way, the electrical connector 72, the circuit board 73 and the heating film 71 form a complete passage.

[0062] In other embodiments, according to actual needs, the first electrical connection end of the electrical connector 72 can also be directly connected to the electrical connection head of the heating film 71 without providing a circuit board 73 for conversion.

[0063] The main housing 10 includes a fixed wall 131 disposed adjacent to the bottom housing 15 , and a through opening 105 is formed in the middle of the fixed wall 131 . The bottom wall of the liquid storage cavity 103 includes the fixed wall 131 and the heating plate 61 .

[0064] Specifically, combined Figure 2 , 7 As shown, the second housing 13 is provided with an annular fixed wall 131 near the bottom of the liquid storage cavity 103, and the middle of the fixed wall 131 is a through opening 104. If there is no heating plate 61, the liquid storage cavity 103 and the accommodating chamber 104 will be connected. The fixed wall 131 and the heating plate 61 are used to bear the liquid together, and the heating plate 61 is used to directly contact the liquid to heat the liquid.

[0065] The heating plate 61 is fixed to the fixed wall 131 to cover the opening 104, and the fixed wall 131 is equivalent to a fixed structure for fixing the heating plate 61. In other embodiments, other fixed structures can also be used to fix the heating plate 61, so that the fixed wall 131 can be eliminated, and the heating plate 61 can realize complete liquid storage load-bearing.

[0066] The fixed wall 131 is provided with a first fixed structure toward the heating plate 61 , and the outer periphery of the heating plate 61 is provided with a second fixed structure matched with the first fixed structure. The first fixed structure and the second fixed structure are connected and fixed by hot-melt pressing, and the connection is firm.

[0067] Among them, the first fixing structure is a positioning post structure, the second fixing structure is a positioning groove structure, the positioning post is hot-melt pressed into the positioning groove, and a plurality of the first fixing structures are arranged in a circular shape around the fixing wall 131, and a plurality of the second fixing structures are arranged in a circular shape around the overtime board 61, with uniform and dense arrangement, which is beneficial to the tight connection between the fixing wall 131 and the heating plate 61 and prevents water leakage.

[0068] The heating assembly 70 is located in the accommodation chamber 104, wherein the heating film 71 is attached and fixed to one side of the heating plate 61 in direct contact to improve the heating efficiency, while the circuit board 72 is spaced from the heating plate 61 in the vertical direction to prevent the circuit board 72 from being heated.

[0069] The fixing wall 131 is provided with a third fixing structure facing the circuit board 73, and the circuit board 73 is provided with a fourth fixing structure matching the third fixing structure. Among them, the third fixing structure is a positioning post structure, the fourth fixing structure is a positioning groove structure, and the positioning post is hot-melt pressed into the positioning groove.

[0070] In one embodiment, the humidifier 100 includes a seal 80 disposed between the heating plate 61 and the main housing 10; combined Figures 7 - 8 As shown, the seal 80 is disposed between the heating plate 61 and the second housing 13, and the seal 80 is annular to match the shape of the fixing wall 131.

[0071] The seal 80 includes a horizontal wall 81 and a vertical wall 82 bent from the outer edge of the horizontal wall 81. The horizontal wall 81 is located between the fixing wall 131 and the heating plate 61, and the horizontal wall 81 is provided with a first sealing portion 811, and the vertical wall 82 is attached and abutted against the inner wall surface of the main housing 10.

[0072] The first sealing portion 811 is located between the outer periphery of the heating plate 61 and the fixing wall 131. The first sealing portion 811 includes a first sealing protrusion facing the fixing wall 131 and a second sealing protrusion facing the outer periphery of the heating plate 61.

[0073] After the heating plate 61 and the fixing wall 131 are fixed, the liquid in the liquid storage cavity 103 may overflow through the gap between the fixing wall 131 and the heating plate 61 and flow to the heating assembly 70 below, resulting in faults such as short circuits in the heating assembly 70. Therefore, the first sealing portion 811 is provided at the connection between the fixing wall 131 and the heating plate 61, which can prevent the liquid from flowing out and has better sealing performance.

[0074] At the same time, the vertical wall 82 also abuts against the inner wall surface of the second housing 13, which can further prevent the liquid stored inside from directly dripping onto the heating assembly 70.

[0075] In one embodiment, the electrical connector 72 is fixed to the main housing 10. The electrical connector 72 includes an insulating body. The direction in which the first electrical connection end and the second electrical connection end are arranged is the insertion direction, and the insertion direction is a horizontal direction. The insulating body includes a waterproof wall 721 provided on its outer surface, and the main housing 10 includes an abutting wall 132 that abuts against the waterproof wall 721 along the insertion direction.

[0076] Combined with Figure 6 、 10 As shown in FIGS. 8-11, the electrical connector 72 is disposed at the bottom of the second housing 13 for convenient insertion. In a specific embodiment, a waterproof wall 721 protrudes from the surface of the insulating body and further abuts against the abutting wall 132, which can prevent external water from entering and play a sealing role.

[0077] The waterproof wall 721 is clamped between the abutting wall 132 and the circuit board 73. The circuit board 73 is fixed to the second housing 13 by hot melt pressing. The setting of the waterproof wall 721 is also used for fixing the insulating body along the insertion direction. When the electrical connector 72 is inserted along the insertion direction, the electrical connector 72 will not displace along the insertion direction.

[0078] Furthermore, the insulating body includes a waterproof groove 722 provided on its surface. The waterproof groove is located on one side of the abutting wall 721 close to the first electrical connection end, and the abutting wall 132 is located above the waterproof groove 722. The waterproof groove 722 can also be used to temporarily store and drain accumulated water to prevent external water from directly entering the heating assembly 70.

[0079] In other embodiments, a sealing ring can also be correspondingly provided at the waterproof groove 722 to achieve a better sealing effect.

[0080] The beneficial effects of the present utility model are as follows: The humidifier 100 is configured with a heating module 60. When the humidifier 100 is disassembled, the heating module 60 can be disassembled at the same time without separating the heating module 60, and there is no risk of user scalding. On the other hand, the heating plate 61 is used to directly heat the water in the liquid storage cavity 103, and the heating assembly 70 is used to directly heat the heating plate 61, with high heating efficiency. The seal 80 is used for waterproofing inside the humidifier 100, and the abutting wall 721 and the waterproof groove 722 are used for waterproofing outside the humidifier 100.

[0081] It should be understood that although this specification is described according to embodiments, not every embodiment only includes an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0082] The series of detailed descriptions listed above are only specific descriptions of the feasible implementation modes of the present utility model, and they are not intended to limit the protection scope of the present utility model. Any equivalent implementation modes or changes made without departing from the technical spirit of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A humidifier for a ventilator, characterized in that: It includes a main shell and a bottom shell arranged at the bottom of the main shell; the main shell includes a liquid storage cavity, and a accommodating chamber is provided between the main shell and the bottom shell; the humidifier includes a heating module arranged in the accommodating chamber, the heating module has a heating plate and a heating component arranged on the side of the heating plate away from the liquid storage cavity, and the heating plate is arranged between the liquid storage cavity and the accommodating chamber to separate the liquid storage cavity and the accommodating chamber.

2. The humidifier for a breathing machine according to claim 1, characterized in that: The heating assembly includes a heating film fixed to one side of the heating plate and an electrical connector electrically connected to the heating film, wherein the electrical connector includes a first electrical connection end for connecting to the heating film and a second electrical connection end exposed outside the main shell.

3. The humidifier for a breathing machine according to claim 2, characterized in that: The heating assembly comprises a circuit board located between the heating film and the electrical connector, the electrical connector of the heating film is connected to the circuit board, and the first electrical connection end is connected to the circuit board.

4. The humidifier for a breathing machine according to claim 3, characterized in that: The main shell includes a fixed wall arranged adjacent to the bottom shell, a through opening is formed in the middle of the fixed wall, the heating plate is fixed to the fixed wall to cover the opening, and the bottom wall of the liquid storage cavity includes the fixed wall and the heating plate.

5. The humidifier for a breathing machine according to claim 4, characterized in that: It includes a sealing member arranged between the heating plate and the main shell; the sealing member has a first sealing portion located between the outer periphery of the heating plate and the fixed wall, and the first sealing portion includes a first sealing protrusion arranged toward the fixed wall and a second sealing protrusion arranged toward the outer periphery of the heating plate.

6. The humidifier for a breathing machine according to claim 5, characterized in that: The sealing member comprises a horizontal wall and a vertical wall bent from the outer edge of the horizontal wall, the horizontal wall is located between the fixed wall and the heating plate, the first sealing portion is arranged on the horizontal wall, and the vertical wall abuts against the inner wall surface of the main shell.

7. The humidifier for a breathing machine according to claim 4, characterized in that: The electrical connector is fixed to the main shell, and the electrical connector includes an insulating body. The direction in which the first electrical connection end and the second electrical connection end are arranged is a plug-in direction, and the plug-in direction is a horizontal direction. The insulating body includes a waterproof wall arranged on its outer surface, and the main shell includes an abutting wall abutting the waterproof wall along the plug-in direction.

8. The humidifier for a breathing machine according to claim 7, characterized in that: The insulating body includes a waterproof groove arranged on the surface thereof, the waterproof groove is located on a side of the abutting wall close to the first electrical connection end, and the abutting wall is located above the waterproof groove.

9. The humidifier for a breathing machine according to claim 4, characterized in that: The fixed wall is provided with a first fixed structure toward the heating plate, and the outer periphery of the heating plate is provided with a second fixed structure matched with the first fixed structure, and the first fixed structure and the second fixed structure are connected and fixed by hot-melt pressing.

10. The humidifier for a breathing machine according to claim 4, characterized in that: The heating film is attached and fixed to one side of the heating plate, the circuit board and the heating plate are spaced a distance apart in the vertical direction, the fixed wall is provided with a third fixing structure toward the circuit board, and the circuit board is provided with a fourth fixing structure matched with the third fixing structure.

11. A ventilator, characterized in that: It comprises a main unit, a breathing mask and a humidifier for a ventilator according to any one of claims 1 to 10, wherein the main unit comprises an airflow driving device, the humidifier comprises an air inlet pipe and an air outlet pipe, the airflow driving device is connected to the air inlet pipe, and the breathing mask is connected to the air outlet pipe.

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